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The cash flow statement

The cash flow statement is where accounting illusions go to die. A company can report strong profits while its cash balance shrinks. A company can report losses while its cash grows. A company can shift profits between years through timing and accounting choices, but cash—actual dollars, actual rupees, actual pounds—either enters the bank account or it does not.

The cash flow statement is organized into three sections: operating cash flow (the cash generated or consumed by the core business), investing cash flow (cash spent on or recovered from capital expenditures and acquisitions), and financing cash flow (cash raised or returned to debt holders and equity holders). Together, these three sections tell the complete story of why the cash balance changed from the beginning of the period to the end.

Operating cash flow is the heartbeat​

Operating cash flow is the cash that the core business generates. It starts with net income (profit) but adjusts for everything that is not cash: depreciation, amortization, changes in working capital, gains and losses on asset sales. A company that reports $100 million in profit but generates only $20 million in operating cash flow is hiding something—it might be building inventory it cannot sell, extending credit to customers who are slow to pay, or recording revenue it has not collected.

Conversely, a company that reports $50 million in profit but generates $120 million in operating cash flow is collecting cash faster than it is earning profit, which can signal a strong business model or aggressive prepayment terms. More commonly, it is a signal of a business with tight working capital: customers pay in advance, suppliers are paid slowly, and inventory turns quickly. This is the cash flow advantage that a company like Costco enjoys.

Operating cash flow is the metric that matters most because it is the hardest to manipulate. You can choose how aggressively to recognize revenue on the income statement, but you cannot choose when a customer actually sends money. You can choose how quickly to depreciate an asset, but you cannot choose to avoid paying for inventory. Operating cash flow is the final test of whether the business model actually works.

Free cash flow is what is left to distribute​

Free cash flow is operating cash flow minus capital expenditures—the cash left over after the company has paid for the machines, buildings, and equipment needed to run and grow the business. This is the cash available to pay dividends, buy back stock, pay down debt, or accumulate in reserves. Free cash flow is what separates a genuinely profitable business from a business that is profitable only on paper.

A company that generates $200 million in operating cash flow but must spend $180 million every year on capital expenditures has only $20 million in free cash flow. If it is paying a $100 million dividend, it is not sustainable; the dividend is being paid by running down cash or taking on debt, not from the profits of the business. A company that generates $200 million in operating cash flow and spends only $20 million on capital expenditures has $180 million in free cash flow—true economic profit that belongs to the shareholders.

The level of required capital expenditure reveals the nature of the business. A technology company that generates $1 billion in revenue while spending only $50 million on capital expenditures has a better business model than a utility that generates $1 billion in revenue while spending $500 million on capital expenditures. Both might be profitable, but the technology company has more cash available for returns to shareholders or for funding growth.

Three sections tell the complete story​

Investing cash flow shows what the company is building. If investing cash flow is large and negative, the company is in growth mode—building factories, acquiring competitors, investing in research and development. If investing cash flow is small, the company is a mature cash harvester. This tells you what phase of the business cycle the company is in and what to expect in the future.

Financing cash flow shows how the company is funding itself. If financing cash flow is positive, the company is raising money from debt or equity issuance. If it is negative, the company is returning money to shareholders through dividends and buybacks, or paying down debt. Over time, the pattern of financing cash flow tells you the company's capital allocation discipline: is it reinvesting in growth, or returning cash to shareholders?

Together, the three sections of the cash flow statement tell the story that the income statement cannot. A company might be profitable but not cash-generative. It might be in a growth phase requiring massive capital investment. It might have changed its working capital strategy, accelerating cash collection or extending payment terms. The cash flow statement reveals all of this, and it cannot lie.

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